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The Sourdough School

DIVERSITY BREAD® || PERSONALISED BREAD || BAKING AS LIFESTYLE MEDICINE

Bake With The Hands Of An Artisan And The Mind Of A Clinician

Set within the walled gardens of Dr Vanessa Kimbell’s beautiful Victorian home in rural Northamptonshire, The Sourdough School is home to the Proven Bread Programme, teaching the art and science of nutrition, the gut microbiome and fermentation in bread. We train bakers to produce Diversity Bread® and healthcare professionals to personalise bread through Baking as Lifestyle Medicine. Arrange a conversation today.

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  • Workshops
    • Book a Call
    • 2 Day Workshops
    • 3 days Personalised Bread Workshops
    • Tuscan Retreat
    • 12 Week Post Course Support
    • Request a Callback
  • About
    • About The Sourdough School
    • Priority Access: Join the Waiting List
    • Contact Us & FAQ
    • Reviews
    • General FAQ’s about The School
    • Diversity Bread™
    • Where to stay & more
    • Training Bakers & Healthcare Professionals
    • Educational Awards Programme
    • The Team
    • A Social Enterprise
    • Contributors & Guest Tutors
    • What Our Students Say
  • Learn
    • The Diploma – January 2027
    • Request a callback
    • Graduation Recipe Collection
  • What is Proven?
    • Baking as Lifestyle Medicine (BALM)
    • Bread as Preventative Health
    • BALM & Bread in The Blue Zone
    • Proven Bread Documentary
    • Prove it – The Case Studies
    • Proven: Bread Podcast
    • Proven
    • Login
  • Personalised Bread
    • Personalising Bread Using Nutrigenetics
    • Personalisation
    • Personalising Bread

Cocoa

Chocolate ..

The cocoa-Bifidobacterium connection

Cocoa is rich in polyphenols, particularly flavanols like epicatechin and catechin. These compounds are poorly absorbed in the small intestine, so they travel to the colon where they act as prebiotics. Bifidobacterium species are particularly good at metabolising these polyphenols, and in return, the polyphenols selectively promote Bifidobacterium growth. It's a rather elegant symbiotic arrangement.

I have not had time to add this to the database but this is a good study. 

Why this matters for mood

Those Bifidobacterium you've just fed do two things:

They produce short-chain fatty acids that stimulate enterochromaffin cells in your gut lining. These cells then produce serotonin. And certain Bifidobacterium species can synthesise GABA directly.

The baker's role

When you fold cocoa into your dough, you are adding a proven prebiotic that increases Bifidobacterium. Those bacteria produce the chemistry of calm. That chemistry talks to the brain through the vagus nerve.

You're not just baking bread. You're baking in the biological conditions for wellbeing.

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DARK POLYPHENOLS-RICH CHOCOLATE AND GUT MICROBIOTA: A LITERATURE REVIEW

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Polyphenols-gut microbiota interplay and brain neuromodulation

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A Review of the Cognitive Effects Observed in Humans Following Acute Supplementation with Flavonoids, and Their Associated Mechanisms of Action

Prebiotic evaluation of cocoa-derived flavanols in healthy humans by using a randomized, controlled, double-blind, crossover intervention study

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